| // Copyright 2008 Google Inc. |
| // Author: Lincoln Smith |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include <config.h> |
| #include "google/vcdecoder.h" |
| #include <string> |
| #include "testing.h" |
| #include "vcdecoder_test.h" |
| #include "vcdiff_defs.h" |
| |
| namespace open_vcdiff { |
| |
| TEST_F(VCDiffStandardDecoderTest, DecodeHeaderOnly) { |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_TRUE(decoder_.DecodeChunk(delta_file_header_.data(), |
| delta_file_header_.size(), |
| &output_)); |
| EXPECT_TRUE(decoder_.FinishDecoding()); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, Decode) { |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_TRUE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_TRUE(decoder_.FinishDecoding()); |
| EXPECT_EQ(expected_target_, output_); |
| } |
| |
| // If we add a checksum to a standard-format delta file (without using format |
| // extensions), it will be interpreted as random bytes inserted into the middle |
| // of the file. The decode operation should fail, but where exactly it fails is |
| // not easy to predict. |
| TEST_F(VCDiffStandardDecoderTest, StandardFormatDoesNotSupportChecksum) { |
| ComputeAndAddChecksum(); |
| InitializeDeltaFile(); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| // Remove one byte from the length of the chunk to process, and |
| // verify that an error is returned for FinishDecoding(). |
| TEST_F(VCDiffStandardDecoderTest, FinishAfterDecodingPartialWindow) { |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_TRUE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size() - 1, |
| &output_)); |
| EXPECT_FALSE(decoder_.FinishDecoding()); |
| // The decoder should not create more target bytes than were expected. |
| EXPECT_GE(expected_target_.size(), output_.size()); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, FinishAfterDecodingPartialWindowHeader) { |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_TRUE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_header_.size() |
| + delta_window_header_.size() - 1, |
| &output_)); |
| EXPECT_FALSE(decoder_.FinishDecoding()); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, TargetMatchesWindowSizeLimit) { |
| decoder_.SetMaximumTargetWindowSize(expected_target_.size()); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_TRUE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_TRUE(decoder_.FinishDecoding()); |
| EXPECT_EQ(expected_target_, output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, TargetMatchesFileSizeLimit) { |
| decoder_.SetMaximumTargetFileSize(expected_target_.size()); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_TRUE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_TRUE(decoder_.FinishDecoding()); |
| EXPECT_EQ(expected_target_, output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, TargetExceedsWindowSizeLimit) { |
| decoder_.SetMaximumTargetWindowSize(expected_target_.size() - 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, TargetExceedsFileSizeLimit) { |
| decoder_.SetMaximumTargetFileSize(expected_target_.size() - 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| // Fuzz bits to make sure decoder does not violently crash. |
| // This test has no expected behavior except that no crashes should occur. |
| // In some cases, changing bits will still decode to the correct target; |
| // for example, changing unused bits within a bitfield. |
| TEST_F(VCDiffStandardDecoderTest, FuzzBits) { |
| while (FuzzOneByteInDeltaFile()) { |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| if (decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)) { |
| decoder_.FinishDecoding(); |
| } |
| InitializeDeltaFile(); |
| output_.clear(); |
| } |
| } |
| |
| // Change each element of the delta file window to an erroneous value |
| // and make sure it's caught as an error. |
| |
| TEST_F(VCDiffStandardDecoderTest, WinIndicatorHasBothSourceAndTarget) { |
| delta_file_[delta_file_header_.size()] = VCD_SOURCE + VCD_TARGET; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, OkayToSetUpperBitsOfWinIndicator) { |
| // It is not an error to set any of the other bits in Win_Indicator |
| // besides VCD_SOURCE and VCD_TARGET. |
| delta_file_[delta_file_header_.size()] = 0xFD; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_TRUE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_TRUE(decoder_.FinishDecoding()); |
| EXPECT_EQ(expected_target_, output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, CopyInstructionsShouldFailIfNoSourceSegment) { |
| // Replace the Win_Indicator and the source size and source offset with a |
| // single 0 byte (a Win_Indicator for a window with no source segment.) |
| delta_window_header_.replace(0, 4, "\0", 1); |
| InitializeDeltaFile(); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| // The first COPY instruction should fail, so there should be no output |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, SourceSegmentSizeExceedsDictionarySize) { |
| ++delta_file_[delta_file_header_.size() + 2]; // increment size |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, SourceSegmentSizeMaxInt) { |
| WriteMaxVarintAtOffset(1, 2); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, SourceSegmentSizeNegative) { |
| WriteNegativeVarintAtOffset(1, 2); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, SourceSegmentSizeInvalid) { |
| WriteInvalidVarintAtOffset(1, 2); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, SourceSegmentEndExceedsDictionarySize) { |
| ++delta_file_[delta_file_header_.size() + 3]; // increment start pos |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, SourceSegmentPosMaxInt) { |
| WriteMaxVarintAtOffset(3, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, SourceSegmentPosNegative) { |
| WriteNegativeVarintAtOffset(3, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, SourceSegmentPosInvalid) { |
| WriteInvalidVarintAtOffset(3, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, DeltaEncodingLengthZero) { |
| delta_file_[delta_file_header_.size() + 4] = 0; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, DeltaEncodingLengthTooLargeByOne) { |
| ++delta_file_[delta_file_header_.size() + 4]; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, DeltaEncodingLengthTooSmallByOne) { |
| --delta_file_[delta_file_header_.size() + 4]; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, DeltaEncodingLengthMaxInt) { |
| WriteMaxVarintAtOffset(4, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, DeltaEncodingLengthNegative) { |
| WriteNegativeVarintAtOffset(4, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, DeltaEncodingLengthInvalid) { |
| WriteInvalidVarintAtOffset(4, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, TargetWindowSizeZero) { |
| static const char zero_size[] = { 0x00 }; |
| delta_file_.replace(delta_file_header_.size() + 5, 2, zero_size, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, TargetWindowSizeTooLargeByOne) { |
| ++delta_file_[delta_file_header_.size() + 6]; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, TargetWindowSizeTooSmallByOne) { |
| --delta_file_[delta_file_header_.size() + 6]; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, TargetWindowSizeMaxInt) { |
| WriteMaxVarintAtOffset(5, 2); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, TargetWindowSizeNegative) { |
| WriteNegativeVarintAtOffset(5, 2); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, TargetWindowSizeInvalid) { |
| WriteInvalidVarintAtOffset(5, 2); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, OkayToSetUpperBitsOfDeltaIndicator) { |
| delta_file_[delta_file_header_.size() + 7] = 0xF8; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_TRUE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_TRUE(decoder_.FinishDecoding()); |
| EXPECT_EQ(expected_target_, output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, DataCompressionNotSupported) { |
| delta_file_[delta_file_header_.size() + 7] = 0x01; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, InstructionCompressionNotSupported) { |
| delta_file_[delta_file_header_.size() + 7] = 0x02; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, AddressCompressionNotSupported) { |
| delta_file_[delta_file_header_.size() + 7] = 0x04; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, AddRunDataSizeZero) { |
| delta_file_[delta_file_header_.size() + 8] = 0; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, AddRunDataSizeTooLargeByOne) { |
| ++delta_file_[delta_file_header_.size() + 8]; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, AddRunDataSizeTooSmallByOne) { |
| --delta_file_[delta_file_header_.size() + 8]; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, AddRunDataSizeMaxInt) { |
| WriteMaxVarintAtOffset(8, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, AddRunDataSizeNegative) { |
| WriteNegativeVarintAtOffset(8, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, AddRunDataSizeInvalid) { |
| WriteInvalidVarintAtOffset(8, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, InstructionsSizeZero) { |
| delta_file_[delta_file_header_.size() + 9] = 0; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, InstructionsSizeTooLargeByOne) { |
| ++delta_file_[delta_file_header_.size() + 9]; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, InstructionsSizeTooSmallByOne) { |
| --delta_file_[delta_file_header_.size() + 9]; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, InstructionsSizeMaxInt) { |
| WriteMaxVarintAtOffset(9, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, InstructionsSizeNegative) { |
| WriteNegativeVarintAtOffset(9, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, InstructionsSizeInvalid) { |
| WriteInvalidVarintAtOffset(9, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, CopyAddressSizeZero) { |
| delta_file_[delta_file_header_.size() + 10] = 0; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, CopyAddressSizeTooLargeByOne) { |
| ++delta_file_[delta_file_header_.size() + 10]; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, CopyAddressSizeTooSmallByOne) { |
| --delta_file_[delta_file_header_.size() + 10]; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, CopyAddressSizeMaxInt) { |
| WriteMaxVarintAtOffset(10, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, CopyAddressSizeNegative) { |
| WriteNegativeVarintAtOffset(10, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, CopyAddressSizeInvalid) { |
| WriteInvalidVarintAtOffset(10, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, InstructionsEndEarly) { |
| --delta_file_[delta_file_header_.size() + 9]; |
| ++delta_file_[delta_file_header_.size() + 10]; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| // From this point on, the tests should also be run against the interleaved |
| // format. |
| |
| TEST_F(VCDiffStandardDecoderTest, CopyMoreThanExpectedTarget) { |
| delta_file_[delta_file_header_.size() + 0x70] = |
| FirstByteOfStringLength(kExpectedTarget); |
| delta_file_[delta_file_header_.size() + 0x71] = |
| SecondByteOfStringLength(kExpectedTarget) + 1; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, CopySizeZero) { |
| delta_file_[delta_file_header_.size() + 0x70] = 0; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, CopySizeTooLargeByOne) { |
| ++delta_file_[delta_file_header_.size() + 0x70]; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, CopySizeTooSmallByOne) { |
| --delta_file_[delta_file_header_.size() + 0x70]; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, CopySizeMaxInt) { |
| WriteMaxVarintAtOffset(0x70, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, CopySizeNegative) { |
| WriteNegativeVarintAtOffset(0x70, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, CopySizeInvalid) { |
| WriteInvalidVarintAtOffset(0x70, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, CopyAddressBeyondHereAddress) { |
| delta_file_[delta_file_header_.size() + 0x7B] = |
| FirstByteOfStringLength(kDictionary); |
| delta_file_[delta_file_header_.size() + 0x7C] = |
| SecondByteOfStringLength(kDictionary); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, CopyAddressMaxInt) { |
| WriteMaxVarintAtOffset(0x7B, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, CopyAddressNegative) { |
| WriteNegativeVarintAtOffset(0x70, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, CopyAddressInvalid) { |
| WriteInvalidVarintAtOffset(0x70, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, AddMoreThanExpectedTarget) { |
| delta_file_[delta_file_header_.size() + 0x72] = |
| FirstByteOfStringLength(kExpectedTarget); |
| delta_file_[delta_file_header_.size() + 0x73] = |
| SecondByteOfStringLength(kExpectedTarget) + 1; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, AddSizeZero) { |
| delta_file_[delta_file_header_.size() + 0x72] = 0; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, AddSizeTooLargeByOne) { |
| ++delta_file_[delta_file_header_.size() + 0x72]; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, AddSizeTooSmallByOne) { |
| --delta_file_[delta_file_header_.size() + 0x72]; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, AddSizeMaxInt) { |
| WriteMaxVarintAtOffset(0x72, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, AddSizeNegative) { |
| WriteNegativeVarintAtOffset(0x72, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, AddSizeInvalid) { |
| WriteInvalidVarintAtOffset(0x72, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, RunMoreThanExpectedTarget) { |
| delta_file_[delta_file_header_.size() + 0x78] = |
| FirstByteOfStringLength(kExpectedTarget); |
| delta_file_[delta_file_header_.size() + 0x79] = |
| SecondByteOfStringLength(kExpectedTarget) + 1; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, RunSizeZero) { |
| delta_file_[delta_file_header_.size() + 0x78] = 0; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, RunSizeTooLargeByOne) { |
| ++delta_file_[delta_file_header_.size() + 0x78]; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, RunSizeTooSmallByOne) { |
| --delta_file_[delta_file_header_.size() + 0x78]; |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, RunSizeMaxInt) { |
| WriteMaxVarintAtOffset(0x78, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, RunSizeNegative) { |
| WriteNegativeVarintAtOffset(0x78, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| TEST_F(VCDiffStandardDecoderTest, RunSizeInvalid) { |
| WriteInvalidVarintAtOffset(0x78, 1); |
| decoder_.StartDecoding(dictionary_.data(), dictionary_.size()); |
| EXPECT_FALSE(decoder_.DecodeChunk(delta_file_.data(), |
| delta_file_.size(), |
| &output_)); |
| EXPECT_EQ("", output_); |
| } |
| |
| } // namespace open_vcdiff |
